Grossite Boyko E R, Wisnyi L G Acta Crystallographica 11 (1958) 444-445 The optical properties and structures of CaO*2Al2O3 and SrO*2Al2O3 Locality: synthetic _database_code_amcsd 0009210 12.89 8.88 5.45 90 107.05 90 C2/c atom x y z Ca1 0 .810 .25 Al1 .169 .086 .295 Al2 .122 .441 .257 O1 0 .526 .25 O2 .117 .048 .544 O3 .127 .260 .175 O4 .188 .447 .598